Exhaust system



FIG. 1 is a perspective view of the exhaust system showing our new design;

FIG. 2 is a perspective view of side opposite that shown in FIG. 1 of the exhaust system showing our new design;

FIG. 3 is a top view of the exhaust system showing our new design;

FIG. 4 is a side elevational view from the left side of the exhaust system as it appears in FIG. 1;

FIG. 5 is a bottom view of the exhaust system showing our new design;

FIG. 6 is a side elevational view form the right side of the exhaust system as it appears in FIG. 1;

FIG. 7 is an end view of the outlet end of the exhaust system showing our new design; and,

FIG. 8 is an end view of the inlet end of the exhaust system showing our new design. 

The ornamental design for a exhaust system, as shown and described. 